The holiday of Sukkot falls on the Hebrew calendar dates of 15-21 Tishrei. Here are the coinciding secular dates for the upcoming years:
2013: September 18 (at sundown) - 25
2014: October 8 (at sundown) - 15
2015: September 27 (at sundown) - October 4
2016: October 16 (at sundown) - 23
2017: October 4 (at sundown) - 11
Note: The Jewish calendar date begins at sundown of the night beforehand. Thus all holiday observances begin at sundown on the secular dates listed, with the following day being the first full day of the holiday. Jewish calendar dates conclude at nightfall.
The first two days of Sukkot (from sundown of the first date listed, until nightfall two days later) are full-fledged, no-work-allowed holiday days. The subsequent days are Chol Hamoed, when work is allowed, albeit with restrictions. The final day of Sukkot is known as Hoshana Rabbah.
The holiday of Sukkot is immediately followed by the holiday of Shemini Atzeret/Simchat Torah.
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